My Windows 10 PC recently updated from SourceTree 3.4.28 to 3.4.29 and has suddenly become very slow in most operations.  Changing repository tabs, pulling from repositories, fetching from repositories most operations take about 15 seconds to start.  Generally once the action starts it completes in normal time.  Even clicking buttons in the pop up dialogues take a long time to react.

Most of the time the title bar changes from the menu to "SourceTree (Not Responding)".

The system was running fine on 3.4.28.  I received the upgrade notification flag and allowed the update to install.  As soon as SourceTree reopened the snail on Valium speed degradation began.  No other changes to the system or any of my repositories was made.

I tried disabling spell checking and disabling gravatar.com as was suggested to address performance issues but they haven't helped.

I note that it is a very popular complaint about all the recent versions though, for me, the issues only started on this update to 3.4.29.